Essay On Security And Encryption

P8.4. a. Preventive controls such as authentication so anyone trying accessing the system has to provide credentials and verify their identity, encryption so sensitive information cannot be accessed, and have a strong internal environment that educates employees on security measures. Detective controls such as log analysis could be used to show determine if someone is trying to log on to a system and is unsuccessful. Corrective controls such as having an effective CIRT that can access the laptop and block or delete important information so the theft cannot access the laptop.

If you think your phone is secure, it is still vulnerable to pilfer your data. Now a day’s hacker does not need physical access to the phone. They can infect your device with the virus or steal your personal information using malicious applications remotely. You can keep away your phone from hackers by taking the 10-smartphone security steps. Step 01: Always install the application from trusted source or device manufacturer 's store.

Electromagnetic Security: Electromagnetic security is to prevent unauthorized access to system’s resources due to the issue of electromagnetic emanations from the systems hardware. [1] Almost every hardware release electromagnetic radiations so there is a risk of leaking out sensitive information. Electromagnetic security has been developed to provide protection to the sensitive data of govt. and business operations. It is installed in telecommunication systems, cryptographic systems and other similar communications systems.

These are (Virtual Private Network) VPN Policy, Password Policy and Acceptable Use Policy. Acceptable Use Policy is a policy that outlines the acceptable use of computer equipment. This policy is in place to protect employees in regards to inappropriate use. Any case of inappropriate use can expose the network to several risks, including viruses. Passwords are the frontline of protection of user accounts.

One way of making sure your server is secure it to enable the iptables. If unauthorized access is attempted, iptables (firewall) will ensure the access will be denied. Another way of securing the server is by using Secure Shell (SSH) which is a secure protocol. Any communication with the server is encrypted with SSH. SSH can be configured to restrict user access.

They know what they are searching for and somehow know how to retrieves and circumvent intrusion detection systems. Different for external attackers, they can be hackers/crackers, saboteurs and thieves. If the network is compromised, intruders can attack or misuse the system. One common technique used by intruders to gain unauthorized access to the system is password theft. That is why, the users should be aware of information security which by not simply sharing their password with others and not leave their computer unprotected.

providing the security sequence. Modern access points come with built-in encryption. The enabling of the built-in security known as Wireless Equivalent Privacy (WEP) is sufficient for their home or small to medium office WLAN for many users. WEP uses 64- and 128-bit encryption and is the cipher scheme designated for use in 802.11b networking. WEP encrypts the data transmitted over a WLAN, protecting the communication between the client and access point.

4.0 BLUETOOTH SECURITY STANDARDS 4.1 Wireless Security One of the major problems with wireless technologies is their security. Non-wireless networking technologies require to tap into the actual line to see the flow of bits, however, with wireless all you have to do is be in the range of the transmitting device. This allows anyone with a receiver to pick up the bits “flapping in the breeze”. This causes security to be one of the main areas of concentration for all wireless technologies. 4.2 Four Essentials of Security Security is made up of four essential parts: authentication, data integrity, non repudiation, and confidentiality.

Even when the text file and key both get hacked or interpreted by third party user it will open up text file which does not contain actual secret message until he knows what actually an Algorithm used he can’t retrieve the original secret message. This protects the data from being invisible and hence be secure during transmission. The user at receiving end uses an Algorithm of code to retrieve the actual secret message from the cover text using Matrix file as key. Key words: Steganography, cryptography, cover text 1. INTRODUCTION Steganography is the art or practice of concealing a message, image, or file within another message, image, or file.

It usually gets permission to run by covert means, then theft of user privacy, or other malicious behavior. The worm is through the network to copy itself to other computers on the network with the malicious program, is different from the common virus, worm virus does not usually infect other programs on the computer, but to steal confidential information on other